Basic one-line scientific calculator with 169 functions helps solve calculations in general math, science, and pre-algebra Offers normal and statistical modes for versatile use, plus three memory positions for storing and recalling important calculations Large 10-digit LCD display shows calculations clearly for better understanding Advanced Direct Algebraic Logic (D.A.L.) ensures calculations are shown exactly as they are written on paper, making it easier to follow the work step by step Playback and editing functions allow for quick corrections and adjustments without starting over Comes with a hard protective case for safety Dual power system (solar and battery) ensures reliable performance in any condition